fix position of emoji picker (#6837)

webapp/components/post_view/post_info/post_info.jsx

@@ -158,6 +158,7 @@ export default class PostInfo extends React.PureComponent {
                             target={this.getDotMenu}
                             onHide={this.hideEmojiPicker}
                             onEmojiClick={this.reactEmojiClick}
+                            rightOffset={7}
                         />
                         <a
                             href='#'